LoRa comms: what am I missing?

I recently stumbled across some vids on youTube showing something I didn’t know I needed: networked radio communications that don’t need cell networks or subscriptions. They seem to be basically dinky encrypted radios used for text messaging. These would be handy in the event that cell networks go down or get mangled or overloaded, or for communicating where cell networks simply aren’t available. They look like snazzy devices… and for the life of me I can’t seem to actually find commercial version of them, only hand-made units. These things seem like they’d be popular as hell; the cost of parts seems to be well under $50 so you’d think a proper manufacturer could sell them for a hundred bucks a pop and make a fortune. So… where are they?